#include<iostream>
#include<unistd.h>
#include<stdlib.h>
using namespace std;

int main()
{
  for(int i=0;i<5;i++)
  {
    cout<<"我是另一个程序，我的pid是："<<getpid()<<endl;
    cout<<"MYENV:"<<(getenv("MYENV")==NULL?"NULL":getenv("MYENV"))<<endl;
    cout<<"PATH:"<<(getenv("PATH")==NULL?"NULL":getenv("PATH"))<<endl;
    sleep(1);
  }

  return 0;
}
